Just like to bump this issue. Is casting inside an overlap even possible? I've tried all sorts of variations of parameters to see what will stick. I either get the "visit_X" error or an uncasted query, which then postgresql says the && (overlap) operation is not allowed.
On Monday, May 6, 2013 2:04:57 PM UTC-4, Glenn Yonemitsu wrote: > > Hi, all. > > In Postgresql I have a CMS entry model with a tag column varchar(20)[]. I > want to do a query so a row with any of the tags will be returned. I know > overlap is the method to use but I can't get the casting done correctly. > > Right now I am trying (and a lot of searching revealed similar solutions): > > query.filter(ContentEntry.tag.overlap(cast(tags, ARRAY(VARCHAR(20))))) > > But I am getting the error: AttributeError: 'SQLCompiler' object has no > attribute 'visit_array'. Any variation involving ARRAY() or array() says > there is no attribute visit_ARRAY or visit_array. > > The following hand crafted SQL works, so for now I'm trying to at least > get to this point (and as I understand, overlap will use the && operator): > > SELECT content_entry.title, content_entry.tag FROM content_entry WHERE > content_entry.tag && cast(array['foo', 'bar'] as varchar(20)[]); > > How can I get this casted correctly? > > Thanks in advance. > -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
